usb usb6: Requested nonsensical USBDEVFS_URB_ZERO_PACKET. vhci_hcd vhci_hcd.0: invalid port number 253 vhci_hcd vhci_hcd.0: invalid port number 253 ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.0.0/5331 is trying to acquire lock: ffff88804638cfa0 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1029 [inline] ffff88804638cfa0 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_del_inode_from_orphan+0x12e/0x7b0 fs/ocfs2/namei.c:2728 but task is already holding lock: ffff88804638c1a0 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1029 [inline] ffff88804638c1a0 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x170/0x4850 fs/ocfs2/suballoc.c:882 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}: down_write+0x96/0x200 kernel/locking/rwsem.c:1625 inode_lock include/linux/fs.h:1029 [inline] ocfs2_reserve_suballoc_bits+0x170/0x4850 fs/ocfs2/suballoc.c:882 ocfs2_reserve_new_metadata_blocks+0x415/0x9a0 fs/ocfs2/suballoc.c:1078 ocfs2_mknod+0x10e1/0x2240 fs/ocfs2/namei.c:351 ocfs2_mkdir+0x181/0x460 fs/ocfs2/namei.c:660 vfs_mkdir+0x406/0x620 fs/namei.c:5271 filename_mkdirat+0x285/0x510 fs/namei.c:5304 __do_sys_mkdir fs/namei.c:5331 [inline] __se_sys_mkdir+0x34/0x150 fs/namei.c:5328 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}: down_write+0x96/0x200 kernel/locking/rwsem.c:1625 inode_lock include/linux/fs.h:1029 [inline] ocfs2_remove_inode fs/ocfs2/inode.c:733 [inline] ocfs2_wipe_inode fs/ocfs2/inode.c:896 [inline] ocfs2_delete_inode fs/ocfs2/inode.c:1157 [inline] ocfs2_evict_inode+0x1640/0x43e0 fs/ocfs2/inode.c:1299 evict+0x624/0xb50 fs/inode.c:841 d_delete_notify include/linux/fsnotify.h:377 [inline] vfs_rmdir+0x413/0x6a0 fs/namei.c:5389 filename_rmdir+0x292/0x520 fs/namei.c:5431 __do_sys_rmdir fs/namei.c:5454 [inline] __se_sys_rmdir+0x2e/0x140 fs/namei.c:5451 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}: check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x1520/0x2cd0 kernel/locking/lockdep.c:5237 lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868 down_write+0x96/0x200 kernel/locking/rwsem.c:1625 inode_lock include/linux/fs.h:1029 [inline] ocfs2_del_inode_from_orphan+0x12e/0x7b0 fs/ocfs2/namei.c:2728 ocfs2_dio_end_io_write fs/ocfs2/aops.c:2379 [inline] ocfs2_dio_end_io+0xfe1/0x13b0 fs/ocfs2/aops.c:2418 dio_complete+0x251/0x790 fs/direct-io.c:281 __blockdev_direct_IO+0x2e00/0x34b0 fs/direct-io.c:1303 ocfs2_direct_IO+0x249/0x2c0 fs/ocfs2/aops.c:2455 generic_file_direct_write+0x1d0/0x3f0 mm/filemap.c:4259 __generic_file_write_iter+0x11d/0x230 mm/filemap.c:4428 ocfs2_file_write_iter+0x1706/0x1f10 fs/ocfs2/file.c:2476 iter_file_splice_write+0xa31/0x1240 fs/splice.c:736 do_splice_from fs/splice.c:936 [inline] direct_splice_actor+0x101/0x160 fs/splice.c:1159 splice_direct_to_actor+0x57b/0xcb0 fs/splice.c:1103 do_splice_direct_actor fs/splice.c:1202 [inline] do_splice_direct+0x195/0x290 fs/splice.c:1228 do_sendfile+0x52e/0x7c0 fs/read_write.c:1372 __do_sys_sendfile64 fs/read_write.c:1433 [inline] __se_sys_sendfile64+0x144/0x1a0 fs/read_write.c:1419 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Chain exists of: &ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE] --> &ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE] --> &ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE] Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]); lock(&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]); lock(&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]); lock(&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]); *** DEADLOCK *** 3 locks held by syz.0.0/5331: #0: ffff88803574c410 (sb_writers#12){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x160 fs/splice.c:1158 #1: ffff888047d009a0 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1029 [inline] #1: ffff888047d009a0 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: ocfs2_file_write_iter+0x440/0x1f10 fs/ocfs2/file.c:2406 #2: ffff88804638c1a0 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1029 [inline] #2: ffff88804638c1a0 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_reserve_suballoc_bits+0x170/0x4850 fs/ocfs2/suballoc.c:882 stack backtrace: CPU: 0 UID: 0 PID: 5331 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 print_circular_bug+0x2e1/0x300 kernel/locking/lockdep.c:2043 check_noncircular+0x12e/0x150 kernel/locking/lockdep.c:2175 check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x1520/0x2cd0 kernel/locking/lockdep.c:5237 lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868 down_write+0x96/0x200 kernel/locking/rwsem.c:1625 inode_lock include/linux/fs.h:1029 [inline] ocfs2_del_inode_from_orphan+0x12e/0x7b0 fs/ocfs2/namei.c:2728 ocfs2_dio_end_io_write fs/ocfs2/aops.c:2379 [inline] ocfs2_dio_end_io+0xfe1/0x13b0 fs/ocfs2/aops.c:2418 dio_complete+0x251/0x790 fs/direct-io.c:281 __blockdev_direct_IO+0x2e00/0x34b0 fs/direct-io.c:1303 ocfs2_direct_IO+0x249/0x2c0 fs/ocfs2/aops.c:2455 generic_file_direct_write+0x1d0/0x3f0 mm/filemap.c:4259 __generic_file_write_iter+0x11d/0x230 mm/filemap.c:4428 ocfs2_file_write_iter+0x1706/0x1f10 fs/ocfs2/file.c:2476 iter_file_splice_write+0xa31/0x1240 fs/splice.c:736 do_splice_from fs/splice.c:936 [inline] direct_splice_actor+0x101/0x160 fs/splice.c:1159 splice_direct_to_actor+0x57b/0xcb0 fs/splice.c:1103 do_splice_direct_actor fs/splice.c:1202 [inline] do_splice_direct+0x195/0x290 fs/splice.c:1228 do_sendfile+0x52e/0x7c0 fs/read_write.c:1372 __do_sys_sendfile64 fs/read_write.c:1433 [inline] __se_sys_sendfile64+0x144/0x1a0 fs/read_write.c:1419 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f278259ce59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f27834a0fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f2782816090 RCX: 00007f278259ce59 RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000008 RBP: 00007f2782632d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000080000002 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f2782816128 R14: 00007f2782816090 R15: 00007fff01e51388